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ARM cortex-a8 doesn't do vmla/vmls well. disable them by default for that cpu
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99549 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -127,6 +127,12 @@ ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS,
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// operations with NEON instructions.
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if (UseNEONFP.getPosition() == 0)
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UseNEONForSinglePrecisionFP = true;
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// The VFP vlma and vlms instructions don't play nicely with others;
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// disable them.
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// FIXME: This may be true for other variants as well. Get benchmark
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// numbers and add them if determined that's the case.
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if (UseVMLxInstructions.getPosition() == 0)
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UseVMLx = false;
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}
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}
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